package com.example.demo1;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

public class Servlet1 extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取请求的参数（办事的材料）查看
        String username = req.getParameter("username");
        System.out.println("在servlet1（柜台1）中查看参数（材料）："+username);
        //给材料 盖一个章 并传递到servlet2（柜台2） 去查看
        req.setAttribute("key","柜台1的章");
        //问路 servlet2(柜台2）怎么走
        // 请求转发必须要以斜杠打头，/   斜杠表示地址为：http://ip:port/工程名/,映射到IDEA代码的web目录
        RequestDispatcher requestDispatcher = req.getRequestDispatcher("/Servlet2");
        //走向servlet2(柜台2）
        requestDispatcher.forward(req,resp);
    }
}
